I was browsing the OpenMW source on github and was having a hard time following the code and jumping between files. (This seems to be a general github problem and maybe there is an obvious solution I am missing). Anyway, I started an OpenGrok server for the master branch that is reindexed a few times a day and thought it might be useful for others. You can view it at http://openmw-grok.appspot.com which just redirects to the public ip (elastic) for an AWS micro instance running a docker container.